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<HEAD><TITLE>smfi_version()</TITLE></HEAD>
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<H1>smfi_version()</H1>

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<!---------- Synopsis ----------->
<TR><TH VALIGN="TOP" ALIGN=LEFT WIDTH=100>SYNOPSIS</TH><TD>
<PRE>
#include &lt;libmilter/mfapi.h&gt;
int smfi_version(
	unsigned int *pmajor,
	unsigned int *pminor,
	unsigned int *ppl
);
</PRE>
Get the (runtime) version of libmilter.
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<!----------- Description ---------->
<TR><TH VALIGN="TOP" ALIGN=LEFT>DESCRIPTION</TH><TD>
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<TH WIDTH="80">Called When</TH>
<TD>smfi_version may be called at any time.</TD>
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<TH WIDTH="80">Effects</TH>
<TD>None.</TD>
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<!----------- Arguments ---------->
<TR><TH VALIGN="TOP" ALIGN=LEFT>ARGUMENTS</TH><TD>
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    <TR BGCOLOR="#dddddd"><TH>Argument</TH><TH>Description</TH></TR>
    <TR VALIGN="TOP"><TD>pmajor</TD>
	<TD>Pointer to an unsigned int variable to store major version number.
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    <TR VALIGN="TOP"><TD>pminor</TD>
	<TD>Pointer to an unsigned int variable to store minor version number.
	</TD></TR>
    <TR VALIGN="TOP"><TD>ppl</TD>
	<TD>Pointer to an unsigned int variable to store patch level number.
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<!----------- Return values ---------->
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<TH VALIGN="TOP" ALIGN=LEFT>RETURN VALUES</TH>
<TD>smfi_version returns MI_SUCCESS.</TD>
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Note: the compile time version of libmilter is available in the macro
<CODE>SMFI_VERSION</CODE>.
To extract the major and minor version as well as the current patch level
from this macro, the macros
<CODE>SM_LM_VRS_MAJOR(v)</CODE>,
<CODE>SM_LM_VRS_MINOR(v)</CODE>, and
<CODE>SM_LM_VRS_PLVL(v)</CODE>
can be used, respectively.
A milter can check the
<CODE>SMFI_VERSION</CODE>
macro to determine which functions to use
(at compile time via C preprocessor statements).
Using this macro and the
<CODE>smfi_version()</CODE>
function,
a milter can determine at runtime whether it has been (dynamically)
linked against the expected libmilter version.
Such a function should only compare the major and minor version,
not the patch level,
i.e., the libmilter library will be compatible despite
different patch levels.


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